폴리에틸렌 섬유 종류에 따른 고로슬래그 기반 무시멘트 복합재료의 역학특성

진정언,최정일,박세언,이방연 한국건설순환자원학회 2022 한국건설순환자원학회 논문집 Vol.10 No.3

이 연구의 목적은 인장강도 및 형상비가 다른 폴리에틸렌 섬유가 무시멘트 복합재료의 인장거동에 미치는 영향을 실험적으로조사하는 것이다. 이를 위하여 섬유 종류 및 물-결합재비를 달리한 세 가지 배합을 준비하였고, 밀도 실험, 압축강도 실험및 일축인장 실험을 수행하였다. 실험결과 유사한 화학구조를 갖지만 인장강도가 10 % 낮고, 형상비가 8.3 % 높은 폴리에틸렌섬유를 사용한 경우 복합재료의 인장변형성능과 인성이 각각 11.7 %와 12.4 % 높고 균열폭은 9.1 % 작은 성능을 나타내었다. 또한 동일한 폴리에틸렌 섬유를 사용한 경우 물-결합재비가 증가하여 복합재료의 강도가 낮지만 인장변형성능과 균열패턴이향상될 수 있는 것으로 나타났다.

백서의 이관에서 Water Channel Protein(Aquaporin)들의분포와 발현에 관한 연구

진정언,강성호,김보형,임대준,이창훈,오대현,정민섭,김형곤 대한이비인후과학회 2006 대한이비인후과학회지 두경부외과학 Vol.49 No.6

Background and Objectives:The mucosal epithelium of middle ear and eustachian tube needs hydration to maintain properamount of moisture. Recent discoveries of various types of water channel proteins (aquaporins;AQPs) in mucous epitheliumsuggest that they play critical roles in the regional regulation of water balance. The purpose of this study is to assess the distributionand expression of different subtypes of AQPs in the rat eustachian tube. Subjects and Method:We analyzed the distributionand expression of AQP1, 2, 4, 5, and 7 using RT-PCR, Western blot, and immunohistochemistry study in the rat middle ear andeustachian tube samples. Results:The expression of the mRNA of AQP1, 4, and 5 were observed in the rat eustachian tube andmiddle ear. The bands of AQP1, 4, and 5 were detected at 28 kDa, 31 kDa, and 26 kDa proteins in the Western blot analysis,respectively. The immunohistochemical analysis demonstrated that AQP1 was expressed in fibroblasts at subepithelial portionsof the rat eustachian tube and that AQP4 was observed at the basolateral membrane of the ciliated epithelial cells. The distributionof AQP5 in rat eustachian tube was limited to the apical surface of serous gland cells, but all of the epithelial goblet cells werelabeled negative. Conclusion:We demonstrated that there are various subtypes of AQP in rat eustachian tube and that they existedat specific cells and sites. This study may be a preliminary study to determine the possibility of relationship between AQP expressionand AQP-related disease in the middle ear and eustachian tube. (Korean J Otolaryngol 2006;49:598-603)

생활체육 유도수련의 열정이 운동지속 의사와 생활만족에 미치는 영향

진정언,정양희,이봉근 한국스포츠학회 2020 한국스포츠학회지 Vol.18 No.1

본 연구는 생활체육 유도 수련의 열정이 운동지속 의사와 생활 만족에 미치는 영향을 규명하고, 유도수련의 열정이 정신적, 신체적, 사회적 건강을 증진시켜 개인의 긍정적 변화를 알 수 있게 하는 기초자료를 제공 하는데 목적이 있다. 결과는 다음과 같다. 첫째, 성별에 따른 열정의 차이는 남성이 여성보다 높게 나타났다. 둘째, 연령에 따른 열정의 차이는 30대가 가장 높게 나타났다. 셋째, 수련기간 및 빈도에 따른 열정의 차이는 기간이 길수록 또는 빈도가 높을수록 열정이 높은 것으로 나타났다. 넷째, 열정, 운동지속의사 및 만족도의 상계분석에서는 변인들 간의 상계수가 다소 높게 나타났다. 다섯째, 열정은 운동지속의사에 정적인 영향을 미치는 것으로 나타났다. 여섯째, 유도수련자의 열정이 만족도에 정적인 영향을 미치는 것으로 나타났다. 이상의 결과를 종합해 볼 때, 건강유지와 가치 있는 사회생활을 하기 위해 유도수련을 통한 생활 만족도를 높여 수련의 지속의사가 증가될 수 있도록 해야 할 것이며, 수련의 재미를 추구하는 참가자의 의사를 뒷받침할 수 있는 다양하고 흥미로운 프로그램이 구성되어 한다. 더욱이 생활체육으로서의 유도수련을 통해 삶의 질이 향상되고 건강 유지 및 증진에 기여하기 위한 지도자의 적극적인 관심이 요구된다고 사료된다. The purpose of this study is to investigate the influence on exercise intention and life satisfaction according to Judo training's passion, and to provide a basic data for enhancement such as psychological, physical, Social Health from Judo training. Results as follow, First, men was higher passion than women on passion Second, thirty was highest than others on passion. Third, passion difference according to training intention and frequency was that high passion as long as intention. Forth, there was high Correlation between exercise intention and life satisfaction Fifth, passion was positive effect to exercise intention. Sixth, judo player's passion was positive effect to satisfaction. These results were mean that should be enhance a satisfaction from judo training for health and worthy society life. Also, there is made up interest program support to participant inclination. Furthermore, judo training reader should have active attention to contribute a keeping health and improvement a quality of life according to Judo training as Sportfor all.

안와 내벽 외향 골절의 내시경적 비내 재건술

홍석찬,진정언,강성호 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.- No.7

경로분석을 이용한 입시전형요소 및 GPA와 취업률의 상관성에 관한 연구

윤옥수,진정언,차경준 한국자료분석학회 2015 Journal of the Korean Data Analysis Society Vol.17 No.1

Scholastic assessment test (SAT) and essay test by university as well as student record have been the 3 core criteria in current university entrance examination. Thus, using path analysis, this study analyzed how these 3 core factors affect grade point average (GPA) in university and job finding (process) after the graduation. Data was collected H university freshman (SAT, essay test, student record) in 2006 and the collected data were analyzed using SAS (statistical analysis system, ver. 9.1). As the results of the analysis, it turned out that although student record affected GPA the most strongly among the 3 criteria, none of the criteria including GPA had significant effect on job finding. Therefore, it is considered appropriate for universities to focus on raising scholastic talents in terms of post management of the students already registered in the universities and on rearing talents required by the corporations through various activities rather than on developing new types of admission methods and criteria. 학교생활기록부(학생부)를 포함한 대학수학능력시험(수능)과 대학별 논술고사 등은 현 대학입시의 3가지 핵심요소이다. 이에 대학입학전형요소인 수능, 학생부, 논술 등이 대학 내 학업평점(grade point average, GPA)에 어떠한 영향을 주는지, 나아가 졸업 후 취업과의 연관성을 경로분석(path analysis)을 통하여 분석하였으며, 분석 자료는 H대학교 2006년도 신입생 기준으로 하여 수능, 논술, 학생부 성적이 모두 있는 정시 가군을 선택했고, 통계분석은 통계 분석 패키지 SAS (statistical analysis system, ver. 9.1)를 사용하였다. 결과적으로 대학입학전형요소 중 학생부가 GPA에 가장 크게 영향을 주었지만, 취업에는 GPA는 물론 대학입학전형요소 모두가 유의한 효과를 보이지 않았다. 따라서 대학은 새로운 입시전형방법의 개발보다는 기 입학한 학생들에 대한 사후적 관리측면에서 학문인재상 뿐 만 아니라 다양한 활동 등을 통한 기업 인재상 등에도 주력해야 할 것으로 사료된다.

허스트지수 특성에 관한 연구

차경준,진정언,황선호 漢陽大學校 自然科學硏究所 2001 自然科學論文集 Vol.21 No.-

본 논문에서는 R/S(Rescaled range)통계량을 어느 한 시계열에 대하여 누적편차를 이용하여 정의할 때, Hurst 지수측정에서 최소한의 필요한 데이터수는 N=2^10이며, 합당한 lag는 2^3 으로서 가능할 수 있음을 제안한다. In this study, in R/S(rescaled range) statistic by using cumulative deviation for one time series, we suggest that the minimum number of data in estimating Hurst Exponent is N=2^10 and the suitable length of lag is 2^3

식도 이물로 진단되었던 기도 이물

강성호,진정언,홍석찬 건국대학교 1997 學術誌 Vol.41 No.2

Inhalation of a foreign body into the respiratory passage is a frequent in children and sometimes fatal accident. It can produce different symptoms and signs, which may be confused with esophageal foreign body. On occasion, it can be not only followed by some pulmonary complications, but also it is often delayed to be removed Recently, we experienced a bronchial foreign body, which was misdiagnosed a esophageal foreign body. It was successfully removed via ventilating bronchoscope, after esophagoscopy and reevaluation of a foreign body in operating room. We report this case with review of the literacture.

신생 횐쥐의 기관섬모에서 $\alpha$-tubulin의 발현과 섬모형성 양상에 대한 면역전자현미경적 연구

김보형,진정언,임대준,김동욱,이근수,강성호 대한기관식도과학회 1999 大韓氣管食道科學會誌 Vol.5 No.1

Background: This study was undertaken to detect the patterns of ciliogenesis in newborn rats trachea. Materials and Methods: The experimental animals(Sprague-Dawley strain) were divided five groups, one day, two day, three day, five day and seven day newborns as experimental groups. To obtain differential distribution of $\alpha$-tubulins in the ciliated cells and patterns of ciliogenesis, we used immunohistochemical stain method with mouse anti $\alpha$-tubulin monoclonal antibody as the primary antibody and gold particles conjugated goat anti mouse IgG as the secondary antibody. And we observed the specimens by electron microscope (Hitach-600 Model). Results : 1) The distribution of the $\alpha$ -tubulin reactions in apical zone was slightly decreased from three day after birth. 2) From 5th day after birth, the decreasing number of gold particles in intermediate zone was remarkable. 3) On the comparison with the other zones, the number of gold particles in the Golgi zone for seven days showed no statistical difference. Conclusion : The ciliogenesis of the tracheal ciliated cells in early newborn rat were made via centriolar and acentriolar pathways, in late groups, from five day after birth, the major ciliogenesis pattern might be centriolar pathway.

안와 내벽 외향 골절의 내시경적 비내 재건술

홍석찬,진정언,강성호 건국대학교 의과학연구소 1997 건국의과학학술지 Vol.7 No.-

The orbital blowout fracture occurs when a convex object(usually a baseball and a fist) larger in diameter than orbital rim strikes the orbit, increasing intraorbital pressure and producing hydraulic forces in all directions, which explodes the bony margin. The most frequently site of fracture is the bony floor in the region of the infraorbital canal, less frequently medial orbital wall, that is, lamina papyracea. Medial orbital wall fractures are also seen with other types of facial fractures such as frontal, nasoethmoid, and maxillary injuries. With the advent of nasal endoscope, endoscopic intranasal reconstruction has substituted for external approach. We experienced a case of blowout fracture of left medial orbital wall, which was treated with endoscopic intranasal reconstruction method and report this case with the review of the literature.

鼻毛의 白毛發生에 의한 年齡推定

김진국,홍석찬,진정언,박의우,김동욱 大韓法醫學會 1999 대한법의학회지 Vol.23 No.1

The gray vibrissae of Korean males(n= 189) between 15 and 75 years old and females(n=111) between 15 and 74 years old whop visited the department of otorhinolaryngology, Konkuk university Chungju hospital during 1996 to 1998, were counted for the purpose of estimating approximate age range in individuals of unknown age. The lowest age appearing gray hairs in both sexes was 15-year-old. The Pearson's correlation coefficient in both sexes was 0.490 (p<0.01). The age appearing gray vibrissae in females was slightly earlier than that of males, however, the differences between right and left sides of nasal cavity were insignificant. This method of counting gray vibrissae would be useful to estimate age range in personal identification together with other methods available until now.